Improvement in spoke-sockets



PATENT OFFICE.

SAMUEL MITCHELL, OF LIMA, NEV YORK.

IMPROVEMENT IN sPoKE-socKi-s.

Specification forming part of Letters Patent No. 152,911, dated July 14,1874; application filed April 21, 1874.

To all whom it may concern:

Be it known that I, SAMUEL MITCHELL, of Lima, in the county ofLivingston and State of New York, have invented a certain new and usefulImprovement in Spoke-Sockets; and I do hereby declare that the followingis a Ifull, clear, and exact description of the construction andoperation of the same.

My invention is an improvement on that patented to me June 4, 1872. Inthat case the socket is secured to the felly by means of spurs, whichare driven into the wood, and the socket simply rests upon the upper orinner surface of the fellywithout other support.

My present invention consists in combining with such a socket aninterior thimble or tube, which projects about half-way through thefelly, more or less, and serves as a central bearing to prevent therocking and twisting of the socket, and the consequent unseatin g ot'the spurs under lateral strain of the spokes. It also serves to receiveand hold the upper half of the spoke-tenon, so that the same cannotsplit the felly, while the lower half comes only in contact with thewood, and can be securely wedged therein, thus securing a better holdthan could be secured in iron, and pre venting any loose action.

In the drawings, Figure l is an elevation. Fig. 2' is across-section.

A is the felly, B the spoke, and C the socket. The latter' is made ofmalleable iron, and is ot' such forni as to tit on the upper or innerside of the felly. It has an enlarged socket, a, which receives acorresponding shoulder, b, of the spoke-tenen. It also has spurs c c,which, being malleable, can bend, and are driven into the sides of thefelly, as shown, thus avoiding the use ol' rivets or screws. The spursmay be single or double on each side, as desired. Thus far theconstruction is the same as in my patent aforesaid. I combine with thissocket an interior thimble or tube, d, which is cast with it, and

extends downward half-way, more or less, through the body of the felly,as shown. This thimble receives the upper half of the spoketenon f, thelower half of same resting in the wood of the felly, and being tightenedtherein by a wedge, g. This thimble'is cast light and thin, and beingembedded about the same depth as the side spurs, it forms a centralbearing, and holds the socket in position against rolling or twisting,so that the side strain of the spokes cannot unseat and detach the spursfrom their hold in the wood. lithout the use of this thimble the socketis liable to turn sidewise under the great leverage, thus 4loosening thespurs on one side and embedding them deeper on theother. My improvementobviates all difficulty of this kind. Another advantage results fromcarrying the thimble but part way through the wood. In such case itgives a bearing to the upper end of the tenon, so that no side straincan split the telly at that point, while the lower end of the tenoncomes in direct contact with the wood, in which it can be wedgedtherein, and prevent the looseuess which would occur between the thimbleand the wood it' carried all the way down.

Having thus described my invention, I do not claim a spoke-socket havinga tubular pon tion extending through the felly.

A spoke-socket constructed with side spurs for striking into the wood,and with a tube for p extending partly through the felly to sustain thespurs, substantially as shown and described. 4

In witness whereof I have hereunto signed my name in the presence of twosubscribing witnesses.

SAMUEL MITCHELL.

Witnesses R. F. OsGooD, E. B. SCOTT.

